Fujitsu MB15C101 User manual

DS04-21215-3Ea
FUJITSU MICROELECTRONICS
DATA SHEET
1Copyright©1999-2008 FUJITSU MICROELECTRONICS LIMITED All rights reserved
1999.4
ASSP
IF Band
PLL Frequency Synthesizer
MB15C101
■DESCRIPTION
TheFujitsuMicroelectronicsMB15C101isanexclusiveIntermediateFrequency(IF)bandPhaseLockedLoop(PLL)
frequency synthesizer withpulse swallow operation. The reference divider and comparison divider have fixed divide
ratios, so that it is not required to set the divide ratios by a microcontroller externally.
It operates with a supply voltage of 3.0 V typ. and dissipates 1.0 mA typ.(270MHz) of current realized through the
use of Fujitsu Microelectronics’s CMOS technology.
The MB15C101 is ideally suitable for PHS systems.
■FEATURES
• Low power supply current: ICC = 1.0 mA typ. (VCC = 3 V, 270MHz)
• Pulse swallow function; Prescaler: 16/17
• Setting frequency (Selectable by Div input.)
– fosc = 19.2 MHz, fIF = 233.15 MHz (Div = “H”)
– fosc = 19.2 MHz, fIF = 259.20 MHz (Div = “L”)
• Lock detector
• Low power supply voltage: VCC = 2.4 V min.
• Wide operating temperature: Ta = –40 to +85°C
■PACKAGE
8-pin plastic SSOP
(FPT-8P-M03)
16-pad plastic BCC
(LCC-16P-M06)

2
MB15C101
■PIN ASSIGNMENT
■PIN DESCRIPTIONS
Pin No. Pin
name I/O Descriptions
SSOP-
8BCC- 16
–1,6,7,8, 9,14,
15,16 N.C – No connection
110V
CC – Power supply voltage input (2.4 V to 3.6 V).
211D
OO Charge pump output
312GND –Ground
4 13 fin I Prescaler input. Connection should be with AC coupling.
5 2 Div I Divide ratio switching input. Two kinds of divide ratios are
selectable by Div input “H” or “L”.
63fout O
Test purpose output. This pin is an open drain output so that
should be left open usually.
74LD O
Lock detector output.
LD = H ; Lock
LD = L ; Unlock
8 5 OSCin I Reference counter input. Connection should be with AC
coupling.
8
7
6
5
1
2
3
4
VCC
DO
GND
fin
OSCIN
LD
fout
DIV
(TOP VIEW)
(FPT-8P-M03)
(TOP VIEW)
(LCC-16P-M06)
2
3
1
4
5
6
78
N.C. N.C.
N.C. N.C.
16 15
13
12
14
11
10
9
fin
GND
N.C.
DO
VCC
N.C.
DIV
fout
N.C.
LD
OSCin
N.C.

3
MB15C101
■BLOCK DIAGRAM
VCC
OSCIN
fin
GND
DIV fout
LD
Do
fr
fp
Oscillator
input
buffer
Reference divider
Reference
counter
(R)
Data
setting
circuit
Prescaler
16 / 17(P)Control circuit
Swallow
counter
(A)
Main
counter
(N)
Phase
comparator
charge
pump
Lock
detector
Output
selector
Comparison divider

4
MB15C101
■ABSOLUTE MAXIMUM RATINGS
WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current,
temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings.
■RECOMMENDED OPERATING CONDITIONS
Handling Precautions
• This device should be transported and stored in anti-static containers.
• This is a static-sensitive device; take proper anti-ESD precautions. Ensure that personnel and equipment are
properly grounded. Cover workbenches with grounded conductive mats.
• Always turn the power supply off before inserting or removing the device from its socket.
• Protect leads with a conductive sheet when handling or transporting PC boards with devices.
Parameter Symbol Rating Unit
Min. Max.
Power supply voltage VCC –0.5 +4.0 V
Input voltage VI–0.5 VCC +0.5 V
Output voltage VOUT –0.5 VCC +0.5 V
Output current IOUT 0+5mA
Storage temperature TSTG –55 +125 °C
Parameter Symbol Value Unit Note
Min. Typ. Max.
Power supply voltage VCC 2.4 3.0 3.6 V
Input voltage VIN GND – VCC V
Operating temperature Ta –40 – +85 °C

5
MB15C101
■ELECTRICAL CHARACTERISTICS
Recommended operating conditions unless otherwise noted.
Parameter Symbol Condition Value Unit
Min. Typ. Max.
Power supply current ICC PLL is locked.(270MHz)
VCC = 3.0 V, Ta = +25°C0.1 1.0 2.0 mA
Operating frequency fin fin AC coupling by 1000 pF
capacitor 50 – 270 MHz
OSCIN fosc AC coupling by 1000 pF
capacitor 3–26MHz
Input sensitivity fin Pfin AC coupling by 1000 pF
capacitor –10 – +2 dBm
OSCIN Vosc AC coupling by 1000 pF
capacitor 0.5 – – Vpp
Input voltage Div VIH –VCC ×
0.7 ––V
VIL –––
VCC ×
0.3 V
Input current Div IIH –––1.0µA
IIL ––1.0––µA
Input current OSCIN IOSC – –100 – 100 µA
Output voltage Do VOH VCC = 3.0 V, IOH=–0.3mA 2.6 – – V
VOL VCC = 3.0 V, IOL= 0.3mA – – 0.4 V
Output current Do IOH VCC = 3.0 V, VOH = 2V,
Ta = +25°C– –6.0 – mA
IOL VCC = 3.0 V, VOL = 1V,
Ta = +25°C–6.0–mA
High impedance cut off
current Do IOFF 0 ≤VDO ≤VCC ––3nA

6
MB15C101
■FUNCTIONAL DESCRIPTIONS
Two different frequencies can be selected by Div input “H” or “L”.
The divide ratios are calculated using the following equation:
fVCO = {(P ×N) + A} ×fOSC ÷ R (A < N)
■PHASE DETECTOR TIME CHART
Note: • .Phase error detection range: –2πto +2π
• Pulses on Do output signal during locked state are output to prevent dead zone.
• LD output becomes low when phase is tWU or more. LD output becomes high when phase error is tWL or
less and continues to be so for three cycles or more.
•.t
WU and tWL depend on OSCin input frequency.
tWU > 8/fosc (s) (e. g.tWU > 625.0ns, foscin = 12.8 MHz)
tWL < 16/fosc (s) (e. g. tWL < 1250.0ns, foscin = 12.8 MHz)
Symbol Description Div = “H” Div = “L”
fvco Output frequency of external VCO 233.15 MHz 259.20 MHz
fosc Reference oscillation frequency 19.2 MHz 19.2 MHz
N Divide ratio of the main counter 291 33
A Divide ratio of the swallow counter 7 12
PPreset divide ratio of dual modulus
prescaler 16/17 16/17
R Divide ratio of the reference counter 384 (fr = 50 kHz) 40 (fr = 480 kHz)
fr
fp
LD
DOHigh impedance
tWLtWU

7
MB15C101
■MEASURMENT CIRCUIT (for measuring input sensitivity fin/OSCin)
SSOP-8
BCC-16
1
2
3
4
8
7
6
5
S.G
50 Ω
1000 pF
0.1 µF
1000 pF
VCC
VCC
2 KΩ
50 Ω
S.G
DIV : H or L
Oscilloscope
S.G
50 Ω
1000 pF
0.1 µF
VCC
1000 pF
VCC
2 KΩ
50 Ω
S.G
87
15 16
9
10
11
12
13
14
6
5
4
3
2
1
DIV : H or L
Oscilloscope

8
MB15C101
■TYPICAL CHARACTERISTICS
1. fin Input Sensitivity
2. OSCIN Input Sensitivity
1000 (MHz)
(dBm)
10
5
0
−5
−10
−15
−20
−25
−30
−35
−40
−45
−50 0 100 200 300 400 500 600 700 800 900
;;
;;
SPEC
VCC =2.4 V
VCC =3.0 V
VCC =3.6 V
Ta =+25 °C
fin (MHz)
Pfin (dBm)
100 (MHz)
Ta =+25 °C
(dBm)
10
5
0
−5
−10
−15
−20
−25
−30
−35
−40
−45
−50 0 102030405060708090
;;;
SPEC VCC =2.4 V
VCC =3.0 V
VCC =3.6 V
fosc (MHz)
Vosc (dBm)

9
MB15C101
3. fin Input Impedance
4. OSCIN Input Impedance
START .500 000 MHz
43
2
1
1 : 58.875 Ω
−850.16 kΩ
50 MHz
2 : 16.891 Ω
−416.2 Ω
100 MHz
3 : 12.047 Ω
−202.87 Ω
200 MHz
4 : 11.867 Ω−131.54 Ω4.0331 pF
STOP 1 000.000 000 MHz
300.000 000 MHz
2
1
4
3
5.1345 Ω
−10.288 kΩ
3 MHz
529.87 Ω
−3.6659 kΩ
10 MHz
114.44 Ω
−1.8514 kΩ
20 MHz
1 :
2 :
3 :
START .500 000 MHz STOP 100.000 000 MHz
26.000 000 MHz
4 : 068.25 Ω−1.4236 Ω4.3 pF

10
MB15C101
5. Do Outut Current
3.0
2.5
2.0
1.5
1.0
0.5
0.0 0−2−4−6−8−10 −12
VOH (V)
IOH (mA)
VCC =3.0 V, Ta =+ 25 °C
VCC =3.0 V, Ta =+25 °C
3.0
2.5
2.0
1.5
1.0
0.5
0.0 024681012
VOL (V)
IOL (mA)
S.G. GND
VCC
VCC
50 Ω1000 pF
fin Do
OSCin Parameter Analyzer
IOH
S.G. GND
VCC
VCC
50 Ω1000 pF fin Do
OSCin Parameter Analyzer
IOL
VOH – IOH
VOL – IOL
Measurement Circuit